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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=indvars -S %s | FileCheck %s
define void @test_phi_select() {
; CHECK-LABEL: @test_phi_select(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[OUTER_HEADER:%.*]]
; CHECK: outer.header:
; CHECK-NEXT: br i1 false, label [[THEN:%.*]], label [[MERGE:%.*]]
; CHECK: then:
; CHECK-NEXT: br label [[MERGE]]
; CHECK: merge:
; CHECK-NEXT: br label [[INNER:%.*]]
; CHECK: inner:
; CHECK-NEXT: [[INNER_IV_NEXT:%.*]] = add nsw i64 0, 0
; CHECK-NEXT: br i1 false, label [[INNER]], label [[OUTER_LATCH:%.*]]
; CHECK: outer.latch:
; CHECK-NEXT: br i1 true, label [[EXIT:%.*]], label [[OUTER_HEADER]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
br label %outer.header
outer.header:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %outer.latch ]
%iv.next.1 = add nsw i64 %iv, 1
%cmp.0 = icmp sgt i64 %iv, 50
br i1 %cmp.0, label %then, label %merge
then:
br label %merge
merge:
%iv.sel = phi i64 [ %iv, %outer.header ], [ %iv.next.1, %then ]
br label %inner
inner: ; preds = %inner, %outer.header.new
%inner.iv = phi i64 [ %iv.sel, %merge ], [ 0, %inner ]
%inner.iv.next = add nsw i64 0, 0
%ec.1 = icmp sgt i64 0, 0
br i1 %ec.1, label %inner, label %outer.latch
outer.latch:
%iv.next = add nuw nsw i64 %iv, 1
%ec.2 = icmp ult i64 %iv.next, 1000
br i1 %ec.2, label %exit, label %outer.header
exit:
ret void
}
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